Company lists · Data verified August 2026

Top 25 B2B marketing agencies based in Oslo, Norway

Name: B2B marketing agencies based in Oslo, Norway
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 64 companies tracked

There are 64 B2B marketing agencies headquartered in Oslo, Norway (RevenueBase, August 2026). RevenueBase tracks 715 professional contacts across them, including 165 with verified work emails and 24 with mobile numbers. Oslo is the largest hub.

This list covers B2B marketing agencies headquartered in Oslo, Norway, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

64Companies

715Contacts tracked

165Verified emails

24Mobile numbers

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The 25 largest B2B marketing agencies based in Oslo, Norway

Ranked by team size

Top 25 of 64 B2B marketing agencies based in Oslo, Norway, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	BLOOM	Oslo	51-200	78	21
2	Innovation Support AS	Oslo	11-50	48	16
3	Markedssjefene AS	Oslo	11-50	42	23
4	Inbound	Oslo	11-50	30	13
5	Fullstakk	Oslo	11-50	24	6
6	Snakk Kommunikasjon AS	Oslo	11-50	16	8
7	Frank & Dick	Oslo	11-50	15	13
8	Nettrafikk AS	Oslo	11-50	14	12
9	Inzynk	Oslo	1-10	14	11
10	Cognito	Oslo	11-50	14	6
11	SDG Tbwa	Oslo	11-50	9	3
12	Salgia AS	Oslo	1-10	7	4
13	Gründerbox	Oslo	1-10	7	3
14	Isbre Media AS	Oslo	11-50	7	1
15	NARD	Oslo	1-10	6	2
16	Papaya Design & Marketing	Oslo	1-10	5	3
17	Fjord Digital	Oslo	1-10	4	1
18	Isipisi	Oslo	1-10	3	3
19	Reprise Digital Norway	Oslo	11-50	3	2
20	Reach Amplified	Oslo	1-10	3	2
21	Smarketing AS	Oslo	1-10	3	2
22	Replan AS	Oslo	1-10	3	2
23	Growit Group	Oslo	1-10	3	1
24	Effekt Media AS	Oslo	1-10	2	2
25	VIVA	Oslo	11-50	2	1

Showing 25 of 64 B2B marketing agencies based in Oslo, Norway

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B2B marketing agencies based in Oslo, Norway at a glance

As of Aug 28, 2026

1-10Median size (employees)

OsloLargest hub · 64 HQs

24Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

B2B marketing agencies by metro in Norway

Metro	Companies
B2B marketing agencies in Oslo	64
B2B marketing agencies in Bergen	7
B2B marketing agencies in Trondheim	4
B2B marketing agencies in Stavanger	4
B2B marketing agencies in Sandefjord	3
B2B marketing agencies in Larvik	2
B2B marketing agencies in Fredrikstad	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “B2B marketing agencies”, with match quality audited by blind human judging, and headquartered in Oslo, Norway.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Contact records re-verify on a rolling cadence; 1 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many B2B marketing agencies are there based in Oslo, Norway?

There are 64 B2B marketing agencies headquartered in Oslo, Norway as of August 2026 (RevenueBase).

What is the largest company on this list?

BLOOM, headquartered in Oslo, tops this list with the largest team on record.

Which city has the most B2B marketing agencies?

Oslo leads with 64 headquartered companies, followed by Bergen (7) and Trondheim (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 165 verified decision-maker contacts tracked across these 64 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.